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standard cell library design

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nikita gupta

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Hi,
I am designing TSMC 0.35um standard cell library for my college project. i have designed basic logic gates with minimum W and L. How can i design these for different driving strength and so how layout will change.

Now i am also trying to make Latch so plz suggest me helpfull links and material.
 

lostinxlation

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high drivability is a product of paralell connection of gates. For layout, you place 2 cells side by side and connect the poly, and then either connect output metals or share the output diffusion if you can.
 

Somashekhar

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nikita gupta,

Design a basic cell 0f 1X drive as per your spec, and for higher drives jus multiply with drive.
For Ex : 1X Inverter L- 0.35.. Wn - 0.5 Wp - 1.2 Derrive 2x from 1X.. For 2x L - same Wn -1 and Wp - 2.4
 

jeevan.life

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nikita gupta,

Design a basic cell 0f 1X drive as per your spec, and for higher drives jus multiply with drive.
For Ex : 1X Inverter L- 0.35.. Wn - 0.5 Wp - 1.2 Derrive 2x from 1X.. For 2x L - same Wn -1 and Wp - 2.4

exactly....2X=2 * 1x cells shared together to save area and reduce leakage
 
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